ML19340C862
| ML19340C862 | |
| Person / Time | |
|---|---|
| Site: | Columbia, Washington Public Power Supply System, Satsop  |
| Issue date: | 10/31/1980 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Ferguson R WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| References | |
| NUDOCS 8012170847 | |
| Download: ML19340C862 (1) | |
Text
.
- sW ~%,o, fhS UNITED STATES
,j NUCLEAR REGULATORY COMMISSION
- J s
REGION V
% *,,, e,/[
o,1 1990 N. CALIFORNIA 80ULEVARD SulTE 202. WALNUT CREE K PLAZA WALNUT CR EE K. CALIFORNIA 94596 l
Octcber 31, 1980 Docket !!os. 50-397, 50-460, 50-508, 50-509, 50-513 Washington Public Power Supoly System P. O. Box 968 3000 George Washington Way Richland, Washington 99352 Attention: Mr. R. L. Ferguson Managing Director Gentlemen:
The enclosed Information Notice provides early notification of an event that may have safety significance. Accorcingly, you should review the Information f;otice for possible applicability to your facility.
?!o specific action or respcnse is recuested at this time; however, contingent upon the results of further staff evaluation, a Bulletin or Circular recom-mending or requesting specific licensee actions may be issued.
If you have questions regarding this matter, please contact me, f
Sincerely,
?,I.h h h R. H. Engelken Director
Enclosures:
1.
IE Information Notice tio. 30-39 2.
Recently issued IE Information flotices cc w/ enclosures:
M. E. Witherspoon W. C. Bibb J. P. Thomas D. E. Dobson G. C. Sorensen 0G 1%170 ff7..
a
SSIt'S tio. : 6835 Accession !:o.-
8008220245 Ifl 30-39 UNITED STATES NUCLEAR REGULATORY CCM!11SSION OFFICE OF INSPECTIOi! AND ENF0PCEMEtlT
'!ASHIt:GTON, D. C. 20555 Cctober 31
, 1980 IE I!!FOR"ATIOM NOTICE N0. 80-39
'9LFUNCTION OF SCLEN010 VALVES t'ANUFACTURED SY VALCOR EilGINEERING CuRPORATION PURPOSE:
The intent of this Infomation Notice is to alert holders of c~ struction pemits ard coeratina licenses for nuclear power plants of a potentially ceneric ortolen involvina the nalfunctionina of certain solenoid valves manu-factured by tne Valcor Enqineering Corcoration (Valcor), ihe solenoid valves so Jnvolved are aesignatec as Valcor Valve Model No. V52600-554-1.
Valcor has i
infomed us tnat these valves have only been succlied to the McGuire f acility; however, since tnese valves were suostituted for solenoid valves of another manufacturer that did not meet tne requirenents of IE Eulletin flo. 79-01 and its arencnents, licensees and hoiders of construction permits should take into l
account ;he croDien identified in this Ir. formation Notice prior to making any l
similar suostitution.
BACKGROUND:
Sy TUX dated June 27, 1920, Valcor subnitted a prelimnary 10 CFR Part 21 Report addressing the ralfunctioning of Valcor solenoid valves at the McGuire facility. The malfunctioning valves have been identified as Valcor Valve Model "c. 526CC-534-1. This TUX was subsequently followed by a letter dated July 3,1980, transmitting a more detailed Part 21 Report entitled,"Ouality Assurance Re: ort", a copy of which is attached hereto as Enclosure No.1.
In brief, the malfunction appears to be an intermittent type wherein the valve fails to cycle from OPEt! to CLOSE to OPEN immediately af ter a sustained period of operation in the energized (OPEN) mode. Although the valves are rated for
" continuous cperation", Valcor contends that the valves were not designed to meet the coerating conditions requiring the immediate cycling from OPEfl to CLOSE to OPEN after a sustained period of continuous energization. A major i
l source of the oroblem, therefore, may be a misunderstanding of the term
" continuous eneration". By letter dated July 14, 1980 to Duke Power Company, Valcor transmitted its recomendations in this matter entitled, " Outline -
Suggested "odification Procedures", a copy of which is attached hereto as l
1 DUPLICATE DOCUMENT Entire document previously entered into system under:
ANO h M l
No. of pages:
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